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In order to investigate the relation between abrasion and crack initiation in the welded zone of rails and axle weight and friction coefficient, through the field measurement of a large number of uneven weld zones, two kinds of typical weld zone uneven data were fitted, and two kinds of typical uneven wheel-rail contact finite element models of upper convex and lower concave weld zones were established. Combined with the friction work model and Archard wear theory, the maximum wear cross section of the welded zone was predicted, and the crack initiation life of the welded zone was predicted based on the Jiang-Sehitoglu model. It is found that with the increase of axle load, the abrasion rate of both the upper convex and lower concave weld zone increases, and the abrasion rate of the upper convex weld zone increases significantly when the axle load reaches 16 t, while the abrasion rate of the lower concave weld zone increases significantly when the axle load reaches 18 t. When the friction coefficient increases from 0.2 to 0.35, the maximal abrasion amount of the two types of weld zones of the upper convex and the lower concave is 1.93 mm and 1.08 mm, respectively. The abrasion rate of the upper convex type increases significantly at a friction coefficient of 0.3, while the abrasion rate of the lower concave type increases significantly at a coefficient of 0.35. When the axle load increases from 12 t to 18 t, the service life of the upper convex weld zone decreases less, while the service life of the lower concave weld zone decreases more. In addition, when the friction coefficient is increased from 0.2 to 0.35, its effect on the service life of the upper convex weld zone is significantly smaller than that of the axle load (12-18 t). However, when the friction coefficient is increased from 0.2 to 0.35, the effect on the service life of the lower concave weld zone is comparable to that of the axle load (12-18 t). The results show that with the increase of axle load and friction coefficient, the influence of concave irregularity on the life of rail welding zone is more significant. In the process of engineering maintenance, we should pay attention to the appearance of concave welding zone and mark and repair it in time.
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为探究钢轨焊接区的磨耗及裂纹萌生与轴重及摩擦因数的关系,通过对大量不平顺焊接区的实地测量,拟合了两种典型焊接区的不平顺数据,建立了上凸和下凹两类典型焊接区不平顺轮轨接触的有限元模型。结合摩擦功模型和Archard磨耗理论,对焊接区最大磨耗截面进行预测,基于Jiang-Sehitoglu模型对焊接区裂纹萌生寿命进行预测。发现随着轴重的增加,上凸及下凹焊接区的磨耗速率均增大;且轴重达到16 t时上凸型焊接区磨耗速率显著增大,而下凹型焊接区在轴重达到18 t时磨耗速率显著增大;摩擦因数从0.2增加到0.35,上凸和下凹两类焊接区最大磨耗量分别为1.93 mm、1.08 mm;且上凸型焊接区磨耗速率在摩擦因数为0.3时显著增大,而下凹型焊接区磨耗速率在摩擦因数为0.35时显著增大。轴重从12 t增加到18 t,上凸型焊接区服役寿命的衰减幅度较小,而下凹型焊接区服役寿命衰减幅度较大。此外,当摩擦因数从0.2增加至0.35时,其对上凸型焊接区服役寿命的影响明显小于轴重(12~18 t)的影响。然而,当摩擦因数从0.2增加至0.35时,其对下凹型焊接区服役寿命的影响与轴重(12~18 t)的影响相当。结果表明,随着轴重和摩擦因数的增加,对钢轨焊接区下凹型不平顺的寿命影响更加显著;在工务维护过程中,应着重关注下凹型焊接区的出现并及时标记和修复。
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, authorsList=林凤涛, 王子旭, 谭荣凯, 张子豪, 杜瑞廷, 史志勤)}, authors=[Author(id=1241038869332816886, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=ecjtu411@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241038869437673472, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, authorId=1241038869332816886, language=EN, stringName=Fengtao LIN, firstName=Fengtao, middleName=null, lastName=LIN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1.State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure, East China Jiaotong University, Nanchang 330013, China
2.Key Laboratory of Conveyance and Equipment of Ministry of Education, East China Jiaotong University, Nanchang 330013, China
3.Key Laboratory of Railway Industry of Intelligent Operation and Maintenance for Locomotive Vehicle, Nanchang 330013, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241038869685137416, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, authorId=1241038869332816886, language=CN, stringName=林凤涛, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1.华东交通大学 轨道交通基础设施性能监测与保障国家重点实验室,南昌 330013
2.华东交通大学 载运工具与装备教育部重点实验室,南昌 330013
3.机车车辆智能运维铁路行业重点实验室,南昌 330013, bio={"content":"
林凤涛,男,1977年生,内蒙古赤峰人,博士,教授,博士研究生导师;主要研究方向为轮轨关系及列车运维新技术;E-mial:ecjtu411@163.com。
"}, bioImg=null, bioContent=
林凤涛,男,1977年生,内蒙古赤峰人,博士,教授,博士研究生导师;主要研究方向为轮轨关系及列车运维新技术;E-mial:ecjtu411@163.com。
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1.华东交通大学 轨道交通基础设施性能监测与保障国家重点实验室,南昌 330013)]), AuthorCompany(id=1241038868397487059, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, xref=2., ext=[AuthorCompanyExt(id=1241038868506538967, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868397487059, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Key Laboratory of Conveyance and Equipment of Ministry of Education, East China Jiaotong University, Nanchang 330013, China), AuthorCompanyExt(id=1241038868519121881, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868397487059, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.华东交通大学 载运工具与装备教育部重点实验室,南昌 330013)]), AuthorCompany(id=1241038868728837088, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, xref=3., ext=[AuthorCompanyExt(id=1241038868737225698, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868728837088, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.Key Laboratory of Railway Industry of Intelligent Operation and Maintenance for Locomotive Vehicle, Nanchang 330013, China), AuthorCompanyExt(id=1241038868745614307, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868728837088, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2, 3, 4, address=
2.Key Laboratory of Conveyance and Equipment of Ministry of Education, East China Jiaotong University, Nanchang 330013, China
3.Key Laboratory of Railway Industry of Intelligent Operation and Maintenance for Locomotive Vehicle, Nanchang 330013, China
4.Xi’an Locomotive Depot, China Railway Xi’an Group Co., Ltd., Xi’an 710000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241038870083596323, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, authorId=1241038869852909581, language=CN, stringName=王子旭, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, 4, address=
2.华东交通大学 载运工具与装备教育部重点实验室,南昌 330013
3.机车车辆智能运维铁路行业重点实验室,南昌 330013
4.中国铁路西安局集团有限公司西安机务段,西安 710000, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241038868397487059, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, xref=2., ext=[AuthorCompanyExt(id=1241038868506538967, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868397487059, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Key Laboratory of Conveyance and Equipment of Ministry of Education, East China Jiaotong University, Nanchang 330013, China), AuthorCompanyExt(id=1241038868519121881, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868397487059, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.华东交通大学 载运工具与装备教育部重点实验室,南昌 330013)]), AuthorCompany(id=1241038868728837088, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, xref=3., ext=[AuthorCompanyExt(id=1241038868737225698, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868728837088, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.Key Laboratory of Railway Industry of Intelligent Operation and Maintenance for Locomotive Vehicle, Nanchang 330013, China), AuthorCompanyExt(id=1241038868745614307, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868728837088, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.机车车辆智能运维铁路行业重点实验室,南昌 330013)]), AuthorCompany(id=1241038868997272552, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, xref=4., ext=[AuthorCompanyExt(id=1241038869005661162, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868997272552, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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4.中国铁路西安局集团有限公司西安机务段,西安 710000)])]), Author(id=1241038870242979882, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=tanrongkai17@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241038870482055223, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, authorId=1241038870242979882, language=EN, stringName=Rongkai TAN, firstName=Rongkai, middleName=null, lastName=TAN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1.State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure, East China Jiaotong University, Nanchang 330013, China
2.Key Laboratory of Conveyance and Equipment of Ministry of Education, East China Jiaotong University, Nanchang 330013, China
3.Key Laboratory of Railway Industry of Intelligent Operation and Maintenance for Locomotive Vehicle, Nanchang 330013, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241038870595301437, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, authorId=1241038870242979882, language=CN, stringName=谭荣凯, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1.华东交通大学 轨道交通基础设施性能监测与保障国家重点实验室,南昌 330013
2.华东交通大学 载运工具与装备教育部重点实验室,南昌 330013
3.机车车辆智能运维铁路行业重点实验室,南昌 330013, bio={"content":"
谭荣凯,男,1990年生,江西丰城人,博士,讲师,硕士研究生导师;主要研究方向为轨道车辆关键部件服役性能;E-mail:tanrongkai17@163.com。
"}, bioImg=null, bioContent=
谭荣凯,男,1990年生,江西丰城人,博士,讲师,硕士研究生导师;主要研究方向为轨道车辆关键部件服役性能;E-mail:tanrongkai17@163.com。
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1.华东交通大学 轨道交通基础设施性能监测与保障国家重点实验室,南昌 330013)]), AuthorCompany(id=1241038868397487059, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, xref=2., ext=[AuthorCompanyExt(id=1241038868506538967, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868397487059, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Key Laboratory of Conveyance and Equipment of Ministry of Education, East China Jiaotong University, Nanchang 330013, China), AuthorCompanyExt(id=1241038868519121881, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868397487059, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.华东交通大学 载运工具与装备教育部重点实验室,南昌 330013)]), AuthorCompany(id=1241038868728837088, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, xref=3., ext=[AuthorCompanyExt(id=1241038868737225698, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868728837088, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.Key Laboratory of Railway Industry of Intelligent Operation and Maintenance for Locomotive Vehicle, Nanchang 330013, China), AuthorCompanyExt(id=1241038868745614307, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, companyId=1241038868728837088, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Fatigue & Fracture of Engineering Materials & Structures,
2000,
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Diagram of the coordinate transformation, figureFileSmall=clTxr0uFUNnu3aOUgDd0ig==, figureFileBig=GSILy25zgd4ybUIaD/EJpQ==, tableContent=null), ArticleFig(id=1241038874420506801, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=图1, caption=
坐标转换示意图, figureFileSmall=clTxr0uFUNnu3aOUgDd0ig==, figureFileBig=GSILy25zgd4ybUIaD/EJpQ==, tableContent=null), ArticleFig(id=1241038874915434680, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Fig. 2, caption=
Wheel-rail contact finite element model, figureFileSmall=fJV3/EGMeJu/7hnSkRDnNA==, figureFileBig=G/eYligvYi+q/QQNP/+XTw==, tableContent=null), ArticleFig(id=1241038874999320766, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=图2, caption=
轮轨接触有限元模型, figureFileSmall=fJV3/EGMeJu/7hnSkRDnNA==, figureFileBig=G/eYligvYi+q/QQNP/+XTw==, tableContent=null), ArticleFig(id=1241038875070623939, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Fig. 3, caption=
Wheel-rail vertical force, figureFileSmall=HaRytvO656hGrYjzPCrXug==, figureFileBig=x/d6i9xGI8S6PAfM89a5Ng==, tableContent=null), ArticleFig(id=1241038875284533445, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=图3, caption=
轮轨垂向力, figureFileSmall=HaRytvO656hGrYjzPCrXug==, figureFileBig=x/d6i9xGI8S6PAfM89a5Ng==, tableContent=null), ArticleFig(id=1241038875779461323, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Fig. 4, caption=
Diagram of two types of irregularity and hardness distribution, figureFileSmall=3amI+GHp2Son7q28e6wMjQ==, figureFileBig=7Hypi9F80ApcKFvCH+5Ivg==, tableContent=null), ArticleFig(id=1241038875905290448, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=图4, caption=
两类不平顺及硬度分布图, figureFileSmall=3amI+GHp2Son7q28e6wMjQ==, figureFileBig=7Hypi9F80ApcKFvCH+5Ivg==, tableContent=null), ArticleFig(id=1241038876064674004, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Fig. 5, caption=
Schematic diagram of the 12th meter rail welding zone, figureFileSmall=h2bL/f/5qOvShfBIEVZg8w==, figureFileBig=bRnEUanavYrS4i7hk/BT3w==, tableContent=null), ArticleFig(id=1241038876228251862, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=图5, caption=
第12米钢轨焊接区示意图, figureFileSmall=h2bL/f/5qOvShfBIEVZg8w==, figureFileBig=bRnEUanavYrS4i7hk/BT3w==, tableContent=null), ArticleFig(id=1241038876299555033, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Fig. 6, caption=
Probability distribution of different transverse displacements, figureFileSmall=Ln1V+kr7cSG/gu767A+RDA==, figureFileBig=NzKVfPKvTMg5mZgDM8knkQ==, tableContent=null), ArticleFig(id=1241038876429578461, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=图6, caption=
不同横移量的通过概率分布, figureFileSmall=Ln1V+kr7cSG/gu767A+RDA==, figureFileBig=NzKVfPKvTMg5mZgDM8knkQ==, tableContent=null), ArticleFig(id=1241038876698013922, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Fig. 7, caption=
Instantaneous wear rate of the irregularity rail weld zone, figureFileSmall=8vsIeg7XzdmvSTQq7GSrVg==, figureFileBig=NZ8oMH3hc5HaHEGb1+1cww==, tableContent=null), ArticleFig(id=1241038876840620263, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=图7, caption=
钢轨焊接区瞬时磨损速率, figureFileSmall=8vsIeg7XzdmvSTQq7GSrVg==, figureFileBig=NZ8oMH3hc5HaHEGb1+1cww==, tableContent=null), ArticleFig(id=1241038877071306988, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Fig.8, caption=
Distribution of the friction work in the welding zone, figureFileSmall=Gw6lJxHkrWXOfcLx+th1Jg==, figureFileBig=l8NE0oRiTsxxpgd20gFF1w==, tableContent=null), ArticleFig(id=1241038877171970289, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=图8, caption=
焊接区摩擦功分布, figureFileSmall=Gw6lJxHkrWXOfcLx+th1Jg==, figureFileBig=l8NE0oRiTsxxpgd20gFF1w==, tableContent=null), ArticleFig(id=1241038877268439284, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Fig.9, caption=
Welding zone wear depth of different axle loads, figureFileSmall=r9Kn95kaXDWcC+GM4h/KCg==, figureFileBig=7YRUQTOGW1V2CNi9vMESlg==, tableContent=null), ArticleFig(id=1241038877469765882, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=图9, caption=
不同轴重焊接区磨耗深度, figureFileSmall=r9Kn95kaXDWcC+GM4h/KCg==, figureFileBig=7YRUQTOGW1V2CNi9vMESlg==, tableContent=null), ArticleFig(id=1241038877654315262, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Fig.10, caption=
Welding zone wear depth of different friction coefficients, figureFileSmall=kl85wwnHRB93sqP0cf+XyA==, figureFileBig=vdAXHcV/Qsy9OyWeWPhoDA==, tableContent=null), ArticleFig(id=1241038877717229830, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=图10, caption=
不同摩擦因数焊接区磨耗深度, figureFileSmall=kl85wwnHRB93sqP0cf+XyA==, figureFileBig=vdAXHcV/Qsy9OyWeWPhoDA==, tableContent=null), ArticleFig(id=1241038877813698829, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Fig.11, caption=
Crack initiation life of the welding zone, figureFileSmall=yv5l8ZnYopNXGnDxrZMiHw==, figureFileBig=1WX5DoNCHYOTkFnvsvnNag==, tableContent=null), ArticleFig(id=1241038877964693779, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=图11, caption=
焊接区裂纹萌生寿命, figureFileSmall=yv5l8ZnYopNXGnDxrZMiHw==, figureFileBig=1WX5DoNCHYOTkFnvsvnNag==, tableContent=null), ArticleFig(id=1241038878111494425, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Tab.1, caption=
Parameters of materials under the rail
, figureFileSmall=null, figureFileBig=null, tableContent=
材料 Material | 泊松比 Poisson ratio | 密度 Density/(kg/m3) | 弹性模量 Elasticity modulus/GPa |
|---|
轨道板 Track board | 0.3 | 2.5×103 | 0.2 |
CA砂浆层 CA mortar layer | 0.3 | 1.8×103 | 24 |
| 道床Roadbed | 0.3 | 2.7×103 | 35 |
), ArticleFig(id=1241038878245712156, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=表1, caption=
轨下材料参数
, figureFileSmall=null, figureFileBig=null, tableContent=
材料 Material | 泊松比 Poisson ratio | 密度 Density/(kg/m3) | 弹性模量 Elasticity modulus/GPa |
|---|
轨道板 Track board | 0.3 | 2.5×103 | 0.2 |
CA砂浆层 CA mortar layer | 0.3 | 1.8×103 | 24 |
| 道床Roadbed | 0.3 | 2.7×103 | 35 |
), ArticleFig(id=1241038878472204574, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Tab.2, caption=
Rail material parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
材料 Material | 泊松比 Poisson ratio | 屈服强度 Yield strength/MPa | 弹性模量 Elasticity modulus /GPa |
|---|
| 母材Base metal | 0.3 | 524 | 206 |
热影响区 Heat affected zone | 0.3 | 464 | 206 |
| 焊缝区Weld area | 0.3 | 460 | 206 |
), ArticleFig(id=1241038878568673572, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=表2, caption=
钢轨材料参数
, figureFileSmall=null, figureFileBig=null, tableContent=
材料 Material | 泊松比 Poisson ratio | 屈服强度 Yield strength/MPa | 弹性模量 Elasticity modulus /GPa |
|---|
| 母材Base metal | 0.3 | 524 | 206 |
热影响区 Heat affected zone | 0.3 | 464 | 206 |
| 焊缝区Weld area | 0.3 | 460 | 206 |
), ArticleFig(id=1241038878744834348, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=EN, label=Tab.3, caption=
Rail fatigue material parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数Parameter | b | c |  |  |
|---|
| 值Value | -0.108 4 | -0.550 1 | 1 015 | 0.509 4 |
), ArticleFig(id=1241038879009075502, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038855265120955, language=CN, label=表3, caption=
钢轨疲劳材料参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数Parameter | b | c |  |  |
|---|
| 值Value | -0.108 4 | -0.550 1 | 1 015 | 0.509 4 |
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